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-rw-r--r--Userland/Libraries/LibWeb/Bindings/ExceptionOrUtils.h13
1 files changed, 12 insertions, 1 deletions
diff --git a/Userland/Libraries/LibWeb/Bindings/ExceptionOrUtils.h b/Userland/Libraries/LibWeb/Bindings/ExceptionOrUtils.h
index 2fa51c1f11..c023c362d6 100644
--- a/Userland/Libraries/LibWeb/Bindings/ExceptionOrUtils.h
+++ b/Userland/Libraries/LibWeb/Bindings/ExceptionOrUtils.h
@@ -20,6 +20,12 @@ constexpr bool IsExceptionOr = false;
template<typename T>
constexpr bool IsExceptionOr<DOM::ExceptionOr<T>> = true;
+template<typename>
+constexpr bool IsThrowCompletionOr = false;
+
+template<typename T>
+constexpr bool IsThrowCompletionOr<JS::ThrowCompletionOr<T>> = true;
+
namespace Detail {
template<typename T>
@@ -32,6 +38,11 @@ struct ExtractExceptionOrValueType<DOM::ExceptionOr<T>> {
using Type = T;
};
+template<typename T>
+struct ExtractExceptionOrValueType<JS::ThrowCompletionOr<T>> {
+ using Type = T;
+};
+
template<>
struct ExtractExceptionOrValueType<void> {
using Type = JS::Value;
@@ -79,7 +90,7 @@ using ExtractExceptionOrValueType = typename Detail::ExtractExceptionOrValueType
// void or ExceptionOr<void>: JS::ThrowCompletionOr<JS::Value>, always returns JS::js_undefined()
// ExceptionOr<T>: JS::ThrowCompletionOr<T>
// T: JS::ThrowCompletionOr<T>
-template<typename F, typename T = decltype(declval<F>()()), typename Ret = Conditional<!IsExceptionOr<T> && !IsVoid<T>, T, ExtractExceptionOrValueType<T>>>
+template<typename F, typename T = decltype(declval<F>()()), typename Ret = Conditional<!IsExceptionOr<T> && !IsVoid<T> && !IsThrowCompletionOr<T>, T, ExtractExceptionOrValueType<T>>>
JS::ThrowCompletionOr<Ret> throw_dom_exception_if_needed(auto&& global_object, F&& fn)
{
if constexpr (IsExceptionOr<T>) {